The Death Cure: Lab Rats : 3rd Book In The Maze In Her Heart Fic Series :

Fresh out of the trials from the scorch, the group of Gladers will have to decide on what to do with their adventure- cope and obey WICKED, or run off and join Roxie's twin, Roland, with the Right Arm? Marie and Minnie along with their friends are once more thrown into life or death situations, including an introduction to a new world, finding long lost relative and parents, learning the truth about WICKED and their pasts, finding out loved ones were not immune to the sanity eating Flare, and knowing sometime in the future, a new addition would be added to the gang, whether they like it, or not. In this third book of the Solitary Series, formerly known as "The Maze in Her Heart" series, friendships will be put to the trust, enemies will form, and regrets will blossom when the fresh wake of death strikes over, and over.

DISCLAIMER: This series was originally named The Maze In Her Heart, but due to the author rebooting the series and editing it's loop holes, this book is still part of that series but with a different name, to clear any and all confusion!